下划线，驼峰转换
public class StringUtil {
/**
* 转换为下划线
*
* @param camelCaseName
* @return
*/
public static String underscoreName(String camelCaseName) {
StringBuilder result = new StringBuilder();
if (camelCaseName != null && camelCaseName.length() > 0) {
result.append(camelCaseName.substring(0, 1).toLowerCase());
for (int i = 1; i < camelCaseName.length(); i++) {
char ch = camelCaseName.charAt(i);
if (Character.isUpperCase(ch)) {
result.append("_");
result.append(Character.toLowerCase(ch));
} else {
result.append(ch);
}
}
}
return result.toString();
}
/**
* 转换为驼峰
*
* @param underscoreName
* @return
*/
public static String camelCaseName(String underscoreName) {
StringBuilder result = new StringBuilder();
if (underscoreName != null && underscoreName.length() > 0) {
boolean flag = false;
for (int i = 0; i < underscoreName.length(); i++) {
char ch = underscoreName.charAt(i);
if ("_".charAt(0) == ch) {
flag = true;
} else {
if (flag) {
result.append(Character.toUpperCase(ch));
flag = false;
} else {
result.append(ch);
}
}
}
}
return result.toString();
}
}
